/**
 * Copyright 2011 Honeywell Federal Manufacturing & Technologies, LLC. This material was produced under U.S. Government
 * contract DE-ACO4-01AL66850, Honeywell Federal Manufacturing & Technologies, LLC, (FM&T) with the U. S. Department of
 * Energy for the operation of the Kansas City Plant . The U.S. Government has rights to use, reproduce, and distribute
 * this software.  NEITHER THE GOVERNMENT NOR Honeywell Federal Manufacturing & Technologies, LLC, MAKES ANY WARRANTY,
 * EXPRESS OR IMPLIED, OR ASSUMES ANY LIABILITY FOR THE USE OF THIS SOFTWARE.  If software is modified to produce
 * derivative works, such modified software should be clearly marked, so as not to confuse it with the version available
 * from FM&T.
 *
 * Additionally, this program is free software; you can redistribute it and/or modify it under the terms of the GNU
 * General Public License Version 3 published by the Free Software Foundation. Accordingly, this program is distributed in
 * the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with this library.
 * If not, see http://www.gnu.org/licenses/.
 */
package org.braintrain.services.search.media;

import com.kcp.ko.fmtnmlib.hibernate.CriteriaFactory;
import org.braintrain.domain.FileManageable;
import org.braintrain.domain.MediaDirectory;
import org.hibernate.Criteria;
import org.hibernate.Session;
import org.hibernate.criterion.Restrictions;

/**
 * Builds the criteria to find the FileManageable domain objects by
 * a given name in a given directory.  This is useful for determining if
 * a name is unique within a MediaDirectory.
 * 
 * @author John Ericksen
 *
 */

public class UniqueFileManageableCriteriaFactory implements CriteriaFactory<FileManageable> {

    private MediaDirectory mediaDirectory;
    private String name;
    
    public UniqueFileManageableCriteriaFactory(String name, MediaDirectory mediaDirectory)
    {
        this.mediaDirectory = mediaDirectory;
        this.name = name;
    }
    
    public Criteria getCriteria(Session session) {
        Criteria crit = session.createCriteria(FileManageable.class);
        
        crit.add(Restrictions.eq("name", name).ignoreCase());
        if(mediaDirectory == null)
        {
            crit.add(Restrictions.isNull("parent"));
        }
        else
        {
            crit.add(Restrictions.eq("parent", mediaDirectory));
        }
        
        return crit;
    }

}
